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PI53304: Auto scaling does not fully scale in to the minimum number of se rvers or scale out to the maximum number of servers

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APAR status

  • Closed as program error.

Error description

  • When using auto scaling in Liberty profile, the scaling
    controller does not fully scale in to the minimum number of
    servers or scale out to the maximum number of servers.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server Liberty Profile- Virtual             *
    *                  Enterprise/IM Component                     *
    ****************************************************************
    * PROBLEM DESCRIPTION: Auto scaling does not fully scale in to *
    *                      the minimum number of servers or scale  *
    *                      out to the maximum number of servers    *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When using auto scaling in Liberty profile, the scaling
    controller does not fully scale in to the minimum number of
    servers or scale out to the maximum number of servers.
    

Problem conclusion

  • When there are multiple scaling members on a host, one is
    elected to be the leader which sends resource usage data to the
    scaling controller.  When the leader is stopped, the other
    scaling members do not properly dispose of control structures
    related to that leader.  This can result in resource usage data
    not being reported correctly to the scaling controller.  The
    code has been corrected so that the scaling members properly
    handle the stopping of the leader.
    
    The fix for this APAR is currently targeted for inclusion in fix
    pack 8.5.5.9.  Please refer to the Recommended Updates page for
    delivery information:
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI53304

  • Reported component name

    LIBERTY PROFILE

  • Reported component ID

    5724J0814

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2015-11-30

  • Closed date

    2015-11-30

  • Last modified date

    2015-11-30

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    LIBERTY PROFILE

  • Fixed component ID

    5724J0814

Applicable component levels

  • R850 PSY

       UP

[{"Business Unit":{"code":"BU053","label":"Cloud \u0026 Data Platform"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"850","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
14 October 2021